Selective hydrogenation of conjugated diolefin polymers

Details Selective hydrogenation of conjugated diolefin polymers Selective hydrogenation of conjugated diolefin polymers

C - Chemistry, Metallurgy

08

F

C08F 8/04 (2006.01) C08C 19/02 (2006.01) C08F 36/04 (2006.01) C08F 293/00 (2006.01)

Patent

CA 2042438

This is a process for the preparation of hydrogenated conjugated diolefin polymers which comprises terminating a living polymer obtained by polymerizing or copolymerizing at least a conjugated diolefin with an organo-alkali metal polymerization initiator in a suitable solvent, by the addition of hydrogen, and effecting selective hydrogenation of the unsaturated double bonds in the conjugated diolefin units of the terminated polymer by contacting the polymer, in the absence of hydrocarbon lithium and alkoxy lithium compounds, with hydrogen in the presence of at least one bis(cyclopentadienyl)titanium compound.

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